Automatic gauge adjuster



April 11, 1939. F. BARNEY ET AL AUTOMATIC GAUGE ADJUSTER Filed Aug. 16,1937 3 Sheets-Sheet l e. Lee l April 11, 1939. F BARNEY AL 2,153,860

AUTOMATIC GAUGE ADJUSTER Filed Aug. 16, 1957 3 Sheets-Sheet 5 PatentedApr. 11, 1939 "Tsar cr sis AUTOMATIC GAUGE ADJUSTER Application August16,

10 Claims.

This invention relates to automatic gauge adjuster particularly adaptedfor use with paper drilling machines. The invention is directed to theautomatic adjusting and stopping a gauge for the side edge of a pack ofsheets of paper which are to be drilled with a plurality of holestherethrough, whereby the pack of paper is properly located with respectto the drill for the drilling of successive holes therethrough, theadjustment and locating of the gauge for a succeeding hole following inregular course after any hole has been drilled. Our invention isdirected to the provision of a novel and eficient means or mechanism forautomatically shifting and properly stopping the side gauge for thepaper pack, such operation taking place after a hole has been drilled,so that after the drill has been lifted above the pack of paper sheetsit may then be moved over to again engage with the side gauge andperfectly position the paper with respect to the drill such that thenext hole drilled will be at the desired position and distance withreference to the preceding drilled hole.

An understanding of the invention may be had from the followingdescription, taken in connection with the accompanying drawings, inwhich,

Fig. l is a side elevation of a paper drilling machine equipped with ourinvention.

Fig. 2 is a front elevation thereof.

Fig. 3 is a fragmentary enlarged front elevation showing the mechanismof the invention in larger scale than it is disclosed in Fig. 2.

Fig. 4 is a plan view of the structure shown in Fig. 3.

Fig. 5 is an end elevation looking at the machine from the left of Figs.3 and 4.

Figs. 6 and 7 are vertical sections taken substantially on the planes oflines 6-6 and 'I'I of Fig. 3, looking in the direction indicated by thearrows.

Fig, 8 is a fragmentary rear elevation of an element of the structure,the front elevation of which is shown in Fig. 3.

Fig. 9 is a vertical section on the plane of line 9-9 of Fig. 7 lookingin the direction indicated, and

Fig. 10 is a side view of a modified form of one detail of thestructure.

Like reference characters refer to like parts in the different figuresof the drawings.

In the construction shown, a horizontal table I upon which the paper tobe drilled is placed is supported at the proper height for convenienceof operation on a suitable support 2 which in turn is carried on ahousing or cabinet 3. Vertical 1937, Serial No. 159,268

rods or posts 4 are mounted for up and down movement, extending abovethe support and normally, when free to do so, will take an upperposition such as shown in Fig. 1 under the influence of a spring means(not shown) which elevates the rods. Down movement of the rods isthrough depression of a foot pedal 5 pivotally mounted at its inner endat 6 with a link bar 7 connecting the pedal with the rods or posts 4.

At the upper end of the vertical rods 4 a housing 8 is adjustablymounted by means of split clamping sleeves 9 which surround the upperend portions of the rods, the clamps being tightened at a desiredposition of the housing. An electric motor I0, through an endless beltII extending around pulleys on the motor shaft and on the shaft of adrill spindle I2 drives the spindle I2 and the connected tubular paperdrill it, the lower end of which is directly above the table I.Therefore, by downward pressure upon the pedal 5 the rotating drill I3is moved downwardly to the pack of paper sheets and drills a holethrough the same, the disks which are cut from the sheets passingupwardly through the hollow drill. Associated with the drill is apresser bar I4 carried at the lower ends of two vertical rods I5 whichhave a slidable upward movement in suitable guides in the housing '8,springs I6 around the rods I5 resisting their upward movement, butyielding when the said presser member is brought against the paper sheetpack, thus holding the sheets against displacement under the action ofthe drill. This construction as thus far described is old and well knownand specifically forms no part of the present invention, but isillustrated and described to show the environment where the presentinvention is used.

A back gauge consisting of the alined bars IT and i8 bolted or otherwisesecured to a base bar I9 is adjustably mounted on the table I. A rod 20extends lengthwise and back of the vertically positioned back gauge barsI! and I8, being connected with a block 2I at the outer end of the barsIll and I9 and to other supporting blocks 22 whereby the rod 20 is infixed permanent relation with respect to the back gauge. This back gaugeconsisting of the bars I'I, I8 and I9, rod 20 and the various blockmembers, some of which have been mentioned and others of which will behereafter described, provides a unit which may be placed against theupper side of the table I and at its ends secured by L-shaped bracketclamps 23 and set screws associated therewith as shown in Figs. 2 and 3in a proper position back of the drill I3; and by changing the positionof the back gauge the distance that the holes to be drilled will be infront of the rear edges of the paper sheets is controlled.

A sleeve 24 is slidably mounted on the rod 20 back of the bar I! and hasconnected with it a forwardly extending bracket 25 on which an end gaugestop bracket 26 is mounted carrying the end gauge member 21 against theflat vertical face of which one edge of the sheets of a pack of sheetsto be drilled engage. The construction of this end gauge is shown inPatent No. 1,928,383, issued September 26, 1933. The lateral position ofthe paper sheets to be drilled with reference to the drill I3 iscontrolled by the position of the end gauge member 21 which position maybe changed by sliding the sleeve 24 to different places on the rod 20.

A latching stop 28 spring actuated by a spring 29 is mounted on thebracket 25 and extends to the rear toward the back gauge bar it and islocated a short distance above the upper edge of said bar l'l. This stopis manually operable towithdraw the same against the force of spring 29by a hand operated lever 38 (Fig. 6). The bracket 25 has a relativelylarge circular opening 3| through which a hexagonal shaft 32 passes andon which a plurality of collars 33 are adjustably mounted, each having aradially projecting stop 34. While three of such collars have been shownthe number may be varied. Set screws to hold the collars at any place towhich adjusted pass through said collars to engage against the rod 32.At its outer end the shaft 32 is provided with a threaded cylindricalsection 35 which threads through the block 2|. The shaft 32 is equippedwith a hand wheel 36 for an adjustment of the bar lengthwise or toproperly locate the angular positions of the stops 34, and may then beclamped against accidental or too free movement by tightening the setscrew 31 to tighten the split threaded journal through which the shaft32 passes.

A rotatable spring actuated wheel or drum 38 is mounted at the frontside of and near the outer end of the back gauge bar I"! and has a steeltape 39 wound thereon the outer free end of which is connected with thebracket 25. Under the action of the spring actuated wheel 38 there is atendency to wind the tape on the wheel and draw the bracket 25 with theconnected end gauge 21 to the left. When this is done, if the bracket 25is to the right of a collar 33 and the stop 34 on such collar is locatedin proper position, the stop 28 will strike against such stop 34,stopping the bracket 25 and the end gauge against further movement tothe left.

Near the position of the drill l3 a block 45 is connected with the backgauge bar I! and the base bar IS, the rod 28 passing therethrough (Fig.'7), in which block a cylindrical recess is made into which thehexagonal shaft 32 extends, and on which a disk 4| is secured having aplurality of horizontal pins projecting therefrom equally spaced fromeach other around the disk. A spring 43 (shown in Fig. 7) is shaped atits free end to engage between any two adjacent pins 42 to yieldinglyhold the disk and connected shaft 32 against movement, said springhowever being yieldable so that the disk may be rotated. A member 44having a dog which normally extends between two of the pins 42 ispivotally mounted on a push rod 46 which passes upwardly through a plate41 located over and secured to the upper end of the block 40. The lowerpart of the push rod 46 is bifurcated for the reception of the member44. A coiled spring 48 normally holds the push rod in upper position asshown in Fig. 7. The member 44 has a projection 49 extending outwardlyopposite the dog on such member and over which a slide 50 (Fig. 8) maybe moved to hold the push rod in lower inoperative position when theautomatic adjustment of the end gauge is not to be used. The upper endof the push rod is immediately below a vertical screw 5! carried by thehousing 3 whereby on the downward movement of the housing in. drillingthe paper the lower end of the screw 5| comes against the push rod 45and moves it in a downward direction. With such downward movement of thepush rod, the dog on member 44 rides over the pin 42 immediatelyunderneath it until it has come below such pin whereupon, on the upwardmovement of the housing 8 when the pedal 5 is released, the dog engagingunder said pin 42 turns the disk 4| and the bar or shaft 32 in acounterclockwise direction (Fig. 7) and thus changes the positions ofthe collars 33 and the stops 34 thereon.

It is to be understood that with the plurality of collars 33 the stop 34projecting therefrom extend at different angles to the horizontal. Forexample, in Fig. 6 the one stop shown in full lines is locatedhorizontally and the two indicated in dotted lines are, in succession,from each other.

In the operation of the machine the drill being at upper position asshown in Fig. 1, the bracket 25 is manually moved so that the latch stop28 is engaged with the stop 34 on the collar 33 nearest the drill. Thepack of paper sheets to be drilled is placed on the table with the backedges against the back gauge bars l1 and I8 and with the end edges tothe left against the end gauge 21. Then on depression of the pedal 5 thepresser member |4 comes against the uppermost sheet and on furtherdepression drill |3 drills through the paper. As this operationcontinues the lower end of the screw 5| comes against the push rod 46moving the same downwardly and compressing the spring 48 until,substantially at the end of the drilling operation, the dog at 44 passesunderneath the pin 42 which initially was directly below said dog 44.Then upon release of the foot pedal and, the upward movement of the rodsor posts 4, and the mechanism connected therewith, the disk 4| is turnedand moves the stop 34 of the collar 33 which has been engaged with thelatching dog 28 out of engagement therewith. At the same time the nextsucceeding collar 33 to the left with its stop 34 has been moved tolocate the stop in horizontal position such that when the disengagementof the first stop 34 with the stop 28 occurs, the spring actuated wheel38 winding up the steel tape 39 moves the bracket 25 to the left andbrings the stop 28 against the stop 34 of the second collar. Thereupon,the operator repositions the pack of paper sheets against the back gaugeand moves the same over to again engage against the end gauge 21 and thedrilling operation may be repeated. At the end of this operation andwith the release of the pedal 5 a disengagement is made from the stop 34of the second collar 33 and the engagement made with the stop 34 of thenext collar 33 tothe left, thereby again automatically changing theposition of the end gauge member 21.

As shown in Figs. 3 and 4, a solid collar 33a having a radius equal tothe distance from the center of the shaft 32 to the free end of a dog 34may be mounted on the shaft beyond the collar 33 farthest to the left,serving as a stop for the movementof the bracketl'i to the left afterthe last drilling operation has been performed. Or as-mayibe preferred,the collar 33 farthest to the left may the replaced by the solid collar33a wherebyat the endof the last drilling operation and .the partialrotation of the shaft 32 there will not bea disengagement of :the stop28 .from

.said large collar. Thereupon, the machine may be reset :for subsequentdrillings.

In Fig. 110 :the collar '33 is shown as replaced :by a modified form ofcollar 3311 from which three projecting stops '34 extend, located 120from each other. This permits resetting the machine for drilling a newpack of paper without turning the shaft :32 but merely moving thebracket '25 to the right, either withdrawing the stopi'28 bydepressionof thelever 36, or by having the beveled nose thereof (see 4)ride over the likebeveled end of the stop at 3Q on the collar 3317 whichwill be farthest to the right. This resetting without changing theposition of the shaft 32 can be performed when the number of holesdrilled through a pack of paper sheets is an even number.

It is, of course, to be understood that the number of collars 33 or 33bon the: shaft 32 may be varied in accordance with the number of holeswhich are to be drilled in the paper sheet pack. Also, that the shaft 32may be turned manually by the hand wheel 36 as much as may be needed inany resetting of the machine for drilling a new paper sheet pack afterthe previous one has been drilled.

With this machine there is a quick and automatic proper positioning ofthe end gauge for the paper at the end of each drilling operation. Theconstruction is relatively simple, easily operated and adjusted and issure in its operation. The invention is defined in the appended claimsand is to be considered comprehensive of all forms of structure comingwithin their scope.

We claim:

1. In a machine of the class described, a horizontal table, a back gaugelocated above and longitudinally of the table, a side gauge movablelongitudinally of the table and located in front of the back gauge, arotatable drill mounted above the table adapted to be moved toward thetable for drilling paper and away from the table after the drilling iscompleted, spring means tending to move the side gauge in. onedirection, stop means associated with the side gauge for holding it in apredetermined position, means operated on the said movements of thedrill for releasing said stop means to free the side gauge for movement,and manually operable means to render ineffective the stop meansassociated with said side gauge.

2. In a machine of the class described, a supporting table, a back gaugelocated above and longitudinally thereof, a slidably mounted side gaugelocated in front of the back gauge and movable lengthwise thereof todifferent positions, a rotatable shaft paralleling the back gauge, aplurality of spaced apart stops thereon, each occupying a differentangular position than the other, a cooperating stop movable with theside gauge, means moving the side gauge in one direction when free to doso, a vertical drill, means for vertically reciprocating the drill,means. for rotating the shaft to change the position. of the stopsthereon on. movement of the drill after it has completed a drillingmovement, and manually operable means to render said cooperating stopineffective.

.3. In a construction of the class described, a horizontal table, a backgauge located lengthwise of and abovethe table and secured in fixedrelation thereto, a horizontal rod paralleling the back gauge mountedthereon, a sleeve slidable on said rod, a supporting bracket connectedwith said sleeve extending in front of the back gauge, a side gaugecarried by said bracketto engage edges of sheets of paper located atright angles to other edges of the paper engaging against the backgauge, a rotatable shaft extended through said bracket substantiallyparallel to the back gauge, a plurality of collars thereon spacedfromeach other, a stop projecting radially from eachcollar, said stopsextending from the collars at different angles, a cooperating stopmounted on said bracket, means connected with said bracket to move thebracket in one direction when free to do so, said means beingineffective when the stop .on the :bracket is engaged with astop on acollar, a vertical drill, a vertically reciprocable support therefor andmeans operated by said reciprocable drill support to rotate said shaft apredetermined amount on the completion of a downward movement followedby an upward movement of said drill support, whereby a stop on a collarengaged with the cooperating stop on the bracket is disengaged therefromand a stop on the next sucoeeding collar is moved into the path ofmovement of said stop on the bracket to engage therewith and stop themovement of the bracket and associated side gauge at a predeterminedsecond position.

i. In a machine of the class described, a horizontal table, a back gaugemounted thereon and extending longitudinally of and above the table, aside gauge located in front of the back gauge and movable over the tablein a direction substantially parallel to the back gauge, means formoving said side gauge in one direction, a rotatably mounted shaft, aplurality of spaced apart collars mounted on the shaft having stopsextending radially therefrom at different angles, a stop associated andmovable with the side gauge adapted to engage with the stops on saidcollars in succession, a vertically positioned drill, means carrying thedrill, said means being movable toward and away from the table, andmeans for turning the shaft on return movement of said drill carryingmeans after a movement toward the table thereof to rotate said shaft andthereby change the positions of the stops on said collars, and manuallyoperable means for withdrawing the stop associated and movable with theside gauge to an inoperative position.

5. In a paper drilling machine having a back gauge, a movable side gaugeand a vertically reciprocating unit for the drill, automatic means foradjusting the side gauge for successive drilling operations comprising arotatably mounted shaft, a plurality of collars adjustably mountedthereon, each of said collars having an arm radially extendingtherefrom, a stop associated and movable with said side gauge to engagewith the arms on said collars successively, means for automaticallymoving said side gauge between said collars, a housing surrounding oneend of said shaft, a vertically reciprocating pin extending from. saidhousing, and means cooperatively associated with said unit and said pinwhereby said shaft is rotated each time a drilling operation iscompleted and the drill is returned to its normal position, as and forthe purpose specified.

6. In a drilling machine having a back gauge, a movable side gauge and arotatable shaft upon which the side gauge is adapted to slide, means forautomatically rotating said shaft through a predetermined angle at thecompletion of each drilling operation for the purpose specifiedcomprising, a housing surrounding one end of said shaft, a disk securedto said shaft within the housing, a vertically reciprocating pinextending through one side of said housing, means to depress said pin onthe downward movement of a drilling operation, means to raise said pinat the completion of said operation, and means associ ated with said pinto rotate said disk on the upward movement of said pin.

7 The combination of elements as defined in claim 6, combined withmanually operable means to withdraw the stop associated and movable withthe side gauge to an inoperative position.

8. The combination of elements as defined in claim 6, said disk having aplurality of pegs extending therefrom, and said means associated withsaid pin including a pivotally mounted member having a projectionthereon adapted to engage one of said pegs in its upward movement,whereby said disk and shaft are rotated.

9. The combination of elements as defined in claim 6, said disk having aplurality of pegs extending therefrom and said last named meansincluding a pivotally mounted member having a projection thereon toengage one of said pegs, said projection being beveled at its under sideto allow it to slide over the peg when it is moved downwardly, wherebyrotation of the disk and shaft is caused only when said pin movesupwardly.

10. The combination of elements as defined in claim 6, combined withmeans to prevent rotation of said disk during the downward movement ofsaid pin.

FREEMAN BARNEY. JAMES WESLEY LEE.

